Absorption bulb



June 16, l925.-

C. J. ROTT MANN ABSORPTION BULB Filed June 9, ;9 19

INVENTOR Clarence dfioflmann ATTORNEY Patented June 16, 1925 u Miran STATE-S PATENT oFFics,

onannnon a Bowman; or wrmtrivsno as, assassinated, Restauran To wssm- INGHOUSE ntno'rme a manosncronrne cotifany', A: summaries on runs Application. filed June 9,

- and it has,for one object, the construction of a bulb which will insure more complete absorption of a gas passed through it.

A still further object of my invention is to provide an absorption bulb which is not only unusually e'liicient but which is simple in design and stronger in construction than the bulbs now in use. 7 g The single figure of the drawing is a longitudinal sectionalview of" a preferred emlimdiment of my invention.

lVhile various changes in design, proportions and materials may be resorted to, my absorption body 1 in the form of a; glass cylinder slightly flared'at its upper end to receive a closure or cap 2, the engaging surfacesof the cylinder and closure being preferably ground to provide a gas-tight joint. The enclosure is preferably of glass" and, lead ing through it and preferably tegrally with it, is the gas inlet or supply tube 3 which, immediately outside ofthe cap may be formed with an' enlargement or chamber a providing a trap for any vapors or splashing liquid tending to escape from the bulb. This inlet tube preferably eX- tends to within a short distance of the bot tom of the cylinder and is formed, at its end, with a reduced discharge passage or opening 5.

At spaced intervals throughout its length, the inlet tube is formed with a series of enlargements providing supporting shoulders for movable baffles 7 which may be in the form of inverted glass cups of slightly less external diameter than the internal diameter of the cylinder. These cups fit relatively closely about the tube immediately above the shoulders, while the tube below the shoulders is formed with reduced portions 8.

Projections or stops 9 are formed at spaced intervals on the tube to limit movebulb may preferably comprise a formed in- Assent-Tron Burns.

1919. Serial N'o; 302,737.

ment. of the baflles,.being so disposed that, as a battle moves toward the one atevegn will be stopped when it approximately reaches thelatter baflie. i A gasroutlet tube 10: may lead from the closure 2, being preferably formed integrally, with it andprovidedwith an emerge ment or chamber providing a tr al to catch any liquid which may bepassing the b'ulb with the escaping gases. My absorption bulb maybe employed place of absorption bulbs now in use for any, purposes for which suclibulbs art san; ed, it being only necessary" to partly, fil-l ,it with an: absorbing solution suitable fb'r" the particular gastobe absorbed. Wlieat ploying the bulb, enough absorbing liquid is poured into it sortuanwHen the closure and parts supported thereby are in place, the upper bafllewill be" somev'vhatbelow'the liquid level in thecylin'der. v I

My bulb is primarily intended erase in carbon-'dioxid deteri'ninations" and, when so employed; maybe filledwith a" solutio'noi caustic soda; The" inlet tube 3 con nectedby a rubber tube or thellike'with'tl'ie source of gassu pply, while the outlet 10 maybe connected'wi'th ab'ulbcon t n'ifig phosphorus pentoxid which will absorbany m oisture. y y y The gas passing through? the laureate 3 escapes through the small r'l'ischarge'open ing 53 inastrea uof sinall bu'bb les which are mainly dissolved by the" absorbing" liquid. The unabsorbed gas is caught in the lowermost of the movable baflies or cups which soon becomes substantially full of gas that is momentarily retarded in its upward movement through the solution by the weight of the cup. When the cup is nearly filled, the buoyancy of the gas lifts the cup until it is stopped by the projection 9, the gas contained in the cup escaping through the space between the cup and the reduced portion of the tube and passing into the cup immediately above. The upper cups, of course, are operated in a similar manner by the passing gas so that the gas is greatly retarded in its upward movement by the cups which, being constantly wet with the absorbent solution and holding the gas under a slight pressure, insure excellent gas absorption. After the gas has passed through the bulb, the latter may be disconnected from the source of supply and the absorption bulb, together with the phosphorus pentoxid bulb, may then be weighed to per mit calculation of the gas absorbed.

From the foregoing description, it will be apparent that my apparatus is unusually compact and easily handled so that the likelihood of errors occurring in Weighing is reduced to a minimum. The bulb may easily contain a comparatively large amount of the absorbing solution so that suflicient solution for a good many runs may be placed in it at one time. Obviously, the closure and parts supported by it may be readily removed from the cylinder, and both the cylinder and the baffles and inlet tube may be easily cleaned.

I have found, by actual tests, that an absorption bulb constructed in accordance with my invention will insure effective absorption for gas flowing at as high a rate as 300 cc. per minute, and results indicate that its reliability, where absorption is slow, is 0.1 mg0.002% carbon content in lowcarbon ferro alloys.

As it is obvious that changes in details of construction and in the materials employed may be made Without affecting the principle of operation of the bulb, no limitations are to be imposed upon my invention other than those indicated in the claims.

I claim as my invention:

1. An absorption bulb comprising a liquid container having a discharge open ing, means for introducing a gas near the bottom of the container, and a plurality of movable baflie members disposed within the container to delay passage of the gas therethrough.

2. An absorption bulb comprising a container and closure therefor, discharge means leading from the closure, a gas-supply pipe leading through the closure, with one end disposed adjacent the bottom of the container, and battle members carried by the supply pipe within the container.

3. An absorption bulb comprising a container and closure therefor, discharge means leading from the closure, a gas-supply pipe leading through the closure, with one end disposed adjacent the bottom of the container, and baflle members carried by the supply pipe within the container, the bailie members being mounted for limited vertical movement.

4. An absorption bulb comprising a container and closure therefor, discharge means leading from the closure, a gas-supply pipe leading through the closure, with one end disposed adjacent the bottom of the container, and a plurality of inverted, cupshaped, battle members mounted for limited vertical movement upon the inlet pipe within the container.

5. An absorption bulb comprising a cylinder, a closure therefor formed with an outlet passage, a gas-supply pipe leading through the closure and terminating at its lower end adjacent the bottom of the cylinder, a plurality of spaced stop elements projecting from the pipe within the cylinder, and baflle members mounted on the pipe and movable between the stop members.

6. An absorption bulb comprising a cylinder, a closure therefor formed with an outlet passage, a gas-supply pipe leading through the closure and terminating at its lower end adjacent the bottom oi the cylinder, a plurality of spaced stop elements projecting from the pipe within the cylinder, and bafile menil'iers mounted on the pipe and movable between the stop members. the pipe being reduced in diameter below each stop member.

In testimony whereof, I have hereunto subscribed my name this 29th day of Mav. 1919. U

CLARENCE J. ROTTMAN N 

